Iam a polygon all of sides have the same maasure all of my sides have the same measure i have 3 sides

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Write a story that matches with the expression 42x-5 pls hurry